The regulating characteristics of hydraulic control pressure in at automatic transmmission 自動變速器液控壓力的調(diào)節(jié)特性
Application of improved genetic algorithms to the electronically controlled pressure - accumulation fuel injection system 改進的遺傳算法應(yīng)用于電控蓄壓式噴油系統(tǒng)
Study on the control of common rail fuel pressure of electronically controlled pressure accumulation fuel injection system for diesel engines 柴油機電控蓄壓式噴油系統(tǒng)共軌燃油壓力的控制研究
The results expresses that the performance of the new value is better comparing with the old one , especially in the following aspects : working stability , controlling pressure , and synchronization 結(jié)果表明,該新型平衡閥在工作平穩(wěn)性、控制壓力以及雙缸同步性等方面明顯優(yōu)于原閥。
On the basis of pressure analysis , we reform some components which affect gas target thickness and designed a suit of puffing system and utilized it to control pressure distribution of system exactly 在壓力分析的基礎(chǔ)上對影響氣體靶厚度的相關(guān)部件進行了改進,并設(shè)計了一套充氣系統(tǒng),實現(xiàn)對系統(tǒng)壓力的實時、準(zhǔn)確調(diào)節(jié)。
These valves are one kind of controllers which control pressure or flow rate continuously vary in proportion with electric input signal . they are typical mechanical , electrical and hydraulic integral products 比例閥所控制的壓力或流量,是隨輸入電信號大小而成比例的,連續(xù)變化的控制元件,是典型的機-電-液-一體化產(chǎn)品。
This paper analyses the type , function and characteristics of usual proportional control valves and raises a new modificative version in the light of their drawback . that is , basing on the principle of flow amplification and electrical feedback and throughout calculation and analysis on flow closed loop control and pressure flow combination . , determination of the minimum controlled pressure difference as well as flow controlling range and structure of main valve and research of the dynamic and static characteristic , the paper puts forward control principle of " flow - load pressure change - displacement revision " and pressure / flow double closed loop , and further expounds that using a proportional controller and a electric mechanical transducer can separately serve the control function of pressure or flow as well as flow pressure combination 本論文分析了目前常用比例閥的類型、功能、特性,并針對其不足提出新的改進方案,即:以流量放大,電反饋兩個原理為基礎(chǔ),通過對流量閉環(huán)控制及壓力流量復(fù)合的計算分析、確定上最小控制壓差及流量控制范圍,確定主閥結(jié)構(gòu)、功能特性研究等,提出了“流量? ?負載壓力變化? ?位移修正”的控制原理和壓力流量雙閉環(huán)控制原理,并進一步論述了利用一個比例控制器和一個“電?機械轉(zhuǎn)換器”就可完成獨立的壓力或流量控制功能以及流量壓力復(fù)合控制功能。
Academy of sciences of russia to develop jointly . with the constant renovated and perfected by the enterprise oneself afterwards , the company has developed a series of steady and reliable , good and cheap , being suitable for kinds of industrial automation observe and control pressure transmitter and temperature transmitter , has become a professional factory professional factory producing transmitter 以后經(jīng)企業(yè)自身不斷更新完善,開發(fā)出一系列穩(wěn)定可靠價廉物美適合各種工業(yè)自動化測控的壓力變送器溫度變送器和液位變送器,成為一家專業(yè)的變送器生產(chǎn)的廠家。